Yes it's a money issue and it's too bad that the japense fans needs to feel this way. I just think they need to be enlightened about all those fabolus things they got and we (who only have twitter) don't. It's too bad Ayu can't be Ayu without getting these complains. I mean for all that she knows some fans are loosing "faith" in her... She should maybe inform them of everything they actually got for being in TA. I'm a happy member and I would love to continue that membership because of all the nice things you get (above them all, the concert tickets lottery
)
Also, Ayu isn't the only artist using twitter these days. Are other artist having the same problems with paying fans thinking it's unfair? Like alan for an example, she tweets pretty often too.
And Ayu is after all ONLY human. She can't possibly remeber all of those twitter names (so she can figure out whom shes already have answered to) that she have been answering "Thank you" too. Naturally she remebers crea_spain and others. But you know, in many tweets she's just saing "TY!!!" and such. You can tell that with those short messages she want's to do some effort and answer as many tweets as possible but their isn't time. It's actually impossible to answer so many tweets as she gets. And it's impossible to remeber everyones usernames and which one who haven't got an answer and such...